Provided you have a few bits n pieces to hand, you should have no problems.
The actual plug and lead are a nice quality for the price and quite easy to fit if you follow the wiring diagram supplied, (that said there are much better diagrams on the internet).
The hanging bracket is not as thick as it could be, so I would suggest a coat of Hammerite before fitting.
Not really enough scotchlocks supplied and the piezo buzzer is not the one in the picture (its tiny and emits an almost useless sound).
All that said, the kit is well worth the money (for the price) and provided you have a few bits n pieces to hand, you should have no problems.